Probe and method for ultrasonic online multi-point detection of insulator

Abstract

The invention provides a probe for ultrasonic online multi-point detection of an insulator. The probe comprises a climbing probe, a straight probe and a transverse wave angle probe, which are sequentially arranged side by side, and the contact surfaces of the three probes are circular arc-shaped. The detection method comprises the following steps: a. the probe is coupled with an insulator to be detected by ultrasonic solid coupling gel; b. the probe emits ultrasonic waves to the insulator to be detected; c. reflected waves when the ultrasonic waves enter the insulator to be detected and penetrate through the insulator to be detected are detected to limit the position section of the insulator; d. a detector receives oscillograms of the reflected waves, when the insulator to be detected generates a defect, a defect wave of the defect occurs on the time axis of the received reflected wave, a signal is transmitted to the detector, and the detector transmits data to a ground server terminal through a wireless data transmission module and displays the data on a display screen of the server terminal; e. the length of the defect is determined according to the size and position of the defect wave of the detected oscillogram. The probe provided by the invention is used for solving the problems of attenuation and real-time accuracy and can react at the first time.

Description

technical field [0001] The invention relates to a probe and a method for ultrasonic on-line multi-point detection of insulators. Background technique [0002] Insulators are an important component of the operation of power plants and substations. They play the role of supporting wires and insulating them. Their working status directly affects the safety of power grid power supply. Because insulators have no inherent deformation and have extremely low toughness, most porcelain insulators have been subjected to long-term mechanical loads during power grid operation and the influence of harsh weather such as wind, snow, and sun, causing additional stress to increase and concentrate, resulting in rapid expansion of internal defects, which is very easy to It will cause brittle fracture of porcelain insulators and cause serious accidents in the power grid. [0003] Due to the old power transmission and transformation equipment in my country's power grid, the equipment has not bee...

AI Technical Summary

Problems solved by technology

[0007] The present invention proposes an ultrasonic online multi-point detection method for insulators, which solves the problem of coupling, attenuation and long-distance telemetry of the new coupling agent, effectively and real-time judges the defect changes inside the insulator, and can respond to the staff at the first time Happening

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